The
LMRFC issues 72 hours of quantitative precipitation forecasts (QPF)
throughout the year. For our routine river forecasts, only 12 hours
of QPF is normally used. Under certain conditions and based on specific
requests by our users, we will utilize 24 hours of QPF in them.
A full 72 hours of QPF is used as input to our river models to produce
local Significant River Flood Outlooks and National Significant
River Flood Outlooks. Therefore, the daily Significant River Flood
Outlook does not account for a full 5 days of QPF covering the LMRFC
river forecast area.